Is it enough to size an pneumatic actuator based on a regulated air supply pressure, or i need to have minimum and maximum air supply pressure values? pressure is regulated by a PCV and there is a pressure gauge downstream of PCV reading the air pressure.
need to replace valve and actuator and do not have other info with regards to air supply, except for what is mentioned above (taken from field)
please advise from experience.
In addition to Tom's response, to which I mostly agree, a few remarks.
The moment you include a regulator in a pneumatic system you will have to ask yourself:
1) what will happen if if fails (open), and
2) what will happen if a technician will try to 'solve' a problem by adjusting the correct set value (provided it was documented anywhere and readible from a reliable gauge)?
Don't forget, installing and maintaining a regulator costs money as well.
My personal opinion: The best regulator is no regulator.
I can think of (only) five reasons why you would ever want to consider installing one:
In case anyone can think of more valid reasons to install a regulator, please let me know.
If not: The best regulator is no regulator.
Good luck and regards, Frans
‘The Other Ways’
Consultant Field Instrumentation and Systems
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